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                                <div id="anchor-navigation-ex-navbar"><i class="fa fa-navicon"></i><ul><ul><li><span class="title-icon "></span><a href="#websocket-&#x804A;&#x5929;&#x5BA4;"><b></b>WebSocket &#x804A;&#x5929;&#x5BA4;</a></li><li><span class="title-icon "></span><a href="#&#x901A;&#x4FE1;&#x6D41;&#x7A0B;"><b></b>&#x901A;&#x4FE1;&#x6D41;&#x7A0B;</a></li><ul><li><span class="title-icon "></span><a href="#&#x57FA;&#x4E8E;-aqueduct-&#x521B;&#x5EFA;&#x5DE5;&#x7A0B;"><b></b>&#x57FA;&#x4E8E; aqueduct &#x521B;&#x5EFA;&#x5DE5;&#x7A0B;</a></li><li><span class="title-icon "></span><a href="#&#x6CE8;&#x518C;&#x8DEF;&#x7531;"><b></b>&#x6CE8;&#x518C;&#x8DEF;&#x7531;</a></li><li><span class="title-icon "></span><a href="#&#x5904;&#x7406;&#x591A;-isolate"><b></b>&#x5904;&#x7406;&#x591A; Isolate</a></li></ul></ul></ul></div><a href="#" id="anchorNavigationExGoTop"><i class="fa fa-arrow-up"></i></a><!-- ex_nolevel -->
<h2 id="websocket-&#x804A;&#x5929;&#x5BA4;"><a name="websocket-&#x804A;&#x5929;&#x5BA4;" class="anchor-navigation-ex-anchor" href="#websocket-&#x804A;&#x5929;&#x5BA4;"><i class="fa fa-link" aria-hidden="true"></i></a>WebSocket &#x804A;&#x5929;&#x5BA4;</h2>
<h2 id="&#x901A;&#x4FE1;&#x6D41;&#x7A0B;"><a name="&#x901A;&#x4FE1;&#x6D41;&#x7A0B;" class="anchor-navigation-ex-anchor" href="#&#x901A;&#x4FE1;&#x6D41;&#x7A0B;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x901A;&#x4FE1;&#x6D41;&#x7A0B;</h2>
<p>&#x6D88;&#x606F;&#x7ED3;&#x6784;&#x7531;&#x4E00;&#x4E2A;&#x7B80;&#x5355;&#x7684;Json&#x683C;&#x5F0F;&#x7EC4;&#x6210;</p>
<pre><code class="lang-json">{
    <span class="hljs-string">&quot;event&quot;</span>: <span class="hljs-string">&quot;message&quot;</span>,
    <span class="hljs-string">&quot;data&quot;</span>:<span class="hljs-string">&quot;&quot;</span>
}
</code></pre>
<p><code>event</code>&#x7C7B;&#x578B;&#xFF1A;<code>message</code>&#x3001;<code>name_ack</code>&#x3001;<code>broadcast</code>&#x3001;<code>error</code></p>
<p><img src="https://img-blog.csdnimg.cn/20200212175731976.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lpbmdzaHVrdW4=,size_16,color_FFFFFF,t_70" alt="&#x4EA4;&#x4E92;&#x56FE;"></p>
<h3 id="&#x57FA;&#x4E8E;-aqueduct-&#x521B;&#x5EFA;&#x5DE5;&#x7A0B;"><a name="&#x57FA;&#x4E8E;-aqueduct-&#x521B;&#x5EFA;&#x5DE5;&#x7A0B;" class="anchor-navigation-ex-anchor" href="#&#x57FA;&#x4E8E;-aqueduct-&#x521B;&#x5EFA;&#x5DE5;&#x7A0B;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x57FA;&#x4E8E; aqueduct &#x521B;&#x5EFA;&#x5DE5;&#x7A0B;</h3>
<p>&#x6267;&#x884C;&#x547D;&#x4EE4;&#xFF0C;&#x751F;&#x6210;&#x9879;&#x76EE;<code>chat</code></p>
<pre><code class="lang-shell">pub global run aqueduct create chat
</code></pre>
<h3 id="&#x6CE8;&#x518C;&#x8DEF;&#x7531;"><a name="&#x6CE8;&#x518C;&#x8DEF;&#x7531;" class="anchor-navigation-ex-anchor" href="#&#x6CE8;&#x518C;&#x8DEF;&#x7531;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x6CE8;&#x518C;&#x8DEF;&#x7531;</h3>
<pre><code class="lang-dart">  <span class="hljs-meta">@override</span>
  Controller <span class="hljs-keyword">get</span> entryPoint {
    <span class="hljs-keyword">final</span> router = Router();
    router
      .route(<span class="hljs-string">&quot;/connect&quot;</span>)
      .link(() =&gt; <span class="hljs-keyword">new</span> WebsocketController(chatRoom));
    <span class="hljs-keyword">return</span> router;
  }
</code></pre>
<p>&#x5B9A;&#x4E49;&#x5904;&#x7406;&#x5668;</p>
<pre><code class="lang-dart"><span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">WebsocketController</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">Controller</span> </span>{
  WebsocketController(<span class="hljs-keyword">this</span>.room);

  <span class="hljs-keyword">final</span> ChatRoom room;

  <span class="hljs-meta">@override</span>
  Future&lt;RequestOrResponse&gt; handle(Request request) <span class="hljs-keyword">async</span> {
    <span class="hljs-comment">//&#x5C06;&#x4E00;&#x4E2A;Http&#x8BF7;&#x6C42;&#x8F6C;&#x4E3A;WebSocket&#x8FDE;&#x63A5;</span>
    <span class="hljs-keyword">final</span> websocket = <span class="hljs-keyword">await</span> WebSocketTransformer.upgrade(request.raw);
    room.add(websocket);

    <span class="hljs-keyword">return</span> <span class="hljs-keyword">null</span>;
  }
}
</code></pre>
<p>&#x4F7F;&#x7528;<code>final websocket = await WebSocketTransformer.upgrade(request.raw);</code>&#x5C06;Http&#x8BF7;&#x6C42;&#x8F6C;&#x4E3A;WebSocket&#x8FDE;&#x63A5;</p>
<h3 id="&#x5904;&#x7406;&#x591A;-isolate"><a name="&#x5904;&#x7406;&#x591A;-isolate" class="anchor-navigation-ex-anchor" href="#&#x5904;&#x7406;&#x591A;-isolate"><i class="fa fa-link" aria-hidden="true"></i></a>&#x5904;&#x7406;&#x591A; Isolate</h3>
<p>&#x9ED8;&#x8BA4;&#x60C5;&#x51B5;&#x4E0B;&#xFF0C;Aqueduct&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x53EF;&#x5728;&#x591A;&#x4E2A;<code>Isolate</code> &#x4E0A;&#x8FD0;&#x884C;&#x3002;&#x7531;&#x4E8E;&#x6BCF;&#x4E2A;<code>Isolate</code> &#x90FD;&#x6709;&#x81EA;&#x5DF1;&#x7684;&#x5806;&#xFF0C;&#x56E0;&#x6B64;&#x5728;&#x53E6;&#x4E00;&#x4E2A;<code>Isolate</code> &#x4E0A;&#x4E0D;&#x80FD;&#x76F4;&#x63A5;&#x8BBF;&#x95EE;&#x5728;&#x8FD9;&#x4E00;&#x4E2A;<code>Isolate</code> &#x4E0A;&#x521B;&#x5EFA;&#x7684; <code>websocket</code> !</p>
<p>&#x56E0;&#x6B64;&#x9700;&#x8981;&#x4F7F;&#x7528;<code>ApplicationMessageHub</code>&#x6765;&#x6253;&#x901A;&#x591A;&#x4E2A;<code>Isolate</code>&#x4E0A;&#x7684;&#x6D88;&#x606F;&#xFF0C;&#x5B9E;&#x73B0;&#x6D88;&#x606F;&#x7FA4;&#x53D1;&#x3002;&#x5B9E;&#x9645;&#x4E0A;&#x5C31;&#x662F;&#x4E00;&#x4E2A;&#x5E7F;&#x64AD;&#x6D41;&#xFF0C;&#x6BCF;&#x4E2A;<code>Isolate</code>&#x90FD;&#x6CE8;&#x518C;&#x8FD9;&#x4E2A;&#x5E7F;&#x64AD;&#x6D41;&#x5373;&#x53EF;</p>
<pre><code class="lang-dart">  <span class="hljs-meta">@override</span>
  Future prepare() <span class="hljs-keyword">async</span> {
    chatRoom = <span class="hljs-keyword">new</span> ChatRoom(messageHub);
    <span class="hljs-comment">// &#x5728;&#x5F53;&#x524D;Isolate &#x6CE8;&#x518C;&#x5E7F;&#x64AD;&#x6D41;&#x76D1;&#x542C;</span>
    messageHub.listen((event) {
      <span class="hljs-built_in">Map</span>&lt;<span class="hljs-built_in">String</span>, <span class="hljs-keyword">dynamic</span>&gt; message = event;

      <span class="hljs-keyword">switch</span> (message[<span class="hljs-string">&quot;event&quot;</span>]) {
        <span class="hljs-keyword">case</span> <span class="hljs-string">&quot;broadcast&quot;</span>: chatRoom?.sendBytesToAllConnections(message[<span class="hljs-string">&quot;data&quot;</span>]);
      }
    });
  }
</code></pre>
<p><a href="https://aqueduct.io/docs/http/websockets/" target="_blank">&#x76F8;&#x5173;&#x7684;&#x5B98;&#x65B9;&#x6587;&#x6863;</a></p>
<p>&#x540E;&#x7EED;&#x8BFE;&#x7A0B;&#xFF0C;&#x5C06;&#x5BF9;&#x8BE5;&#x670D;&#x52A1;&#x7A0D;&#x4F5C;&#x4FEE;&#x6539;&#xFF0C;&#x53EF;&#x76F4;&#x63A5;&#x4F5C;&#x4E3A;Flutter&#x804A;&#x5929;&#x5BA4;&#x7684;&#x540E;&#x53F0; demo&#x3002;</p>
<p>&#x6CE8;&#x610F;&#xFF0C;&#x672C;&#x8BFE;&#x7A0B;&#x7684;&#x4E24;&#x4E2A;&#x670D;&#x52A1;&#x7AEF;&#xFF0C;&#x4F1A;&#x652F;&#x6301;&#x4E0B;&#x9636;&#x6BB5;Flutter&#x5168;&#x6808;&#x5F0F;&#x8BFE;&#x7A0B;&#x7684;&#x6559;&#x5B66;&#x3002;</p>
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